Felix introduces a new dataplane driver API, which will allow for non-iptables
dataplanes in the future.

For pure Go enthusiasts, Calico now has experimental support for swapping out
the C++ based BIRD BGP implementation with GoBGP instead.

Many of Calico’s components have been ported from Python to Go, including:
calicoctl, libcalico (as libcalico-go), calico-cni, libnetwork-plugin, most of
Felix, and parts of calico/node. This port brings with it improved performance
and better alignment with many of the projects within the container ecosystem
(e.g. Calico now uses the native APIs for kubernetes, etcd, and Prometheus directly).

And more! View release notes for the following components below for more information: